TABLE 1—
Summary of Studies on Clinical Presentation of Influenza A and Influenza B in Pediatric Populations Published Between 1995 and 2010 in English-Language Journals
| Citation | Symptoms Similar Across Influenza Types | Symptoms Different in Influenza A Versus Influenza B |
| Chi et al.116 | Abdominal pain | Calf pain (0% vs 14%)* |
| Conjunctivitis | Diarrhea (9% vs 25%)* | |
| Cough | Rhinorrhea (77% vs 63%)* | |
| Fever | ||
| Headache | ||
| Myalgia | ||
| Nausea or vomiting | ||
| Seizure | ||
| Skin rash | ||
| Daley et al.118 | Abdominal pain | None |
| Anorexia | ||
| Conjunctivitis | ||
| Cough | ||
| Diarrhea | ||
| Drowsiness | ||
| Ear discharge | ||
| Fever | ||
| Headache | ||
| Lethargy | ||
| Rash | ||
| Rhinorrhea | ||
| Seizures | ||
| Sore throat | ||
| Stridor | ||
| Vomiting | ||
| Wheeze | ||
| Peltola et al.81 | Abdominal pain | Ill appearance (10% vs 4%)* |
| Cephalalgia | Myalgia (6% vs 15%)* | |
| Conjunctivitis | Rhinorrhea (66% vs 56%)* | |
| Cough | ||
| Diarrhea | ||
| Febrile convulsions | ||
| Fever | ||
| Rash | ||
| Vomiting | ||
| Wheezing | ||
| Shen et al.61 | Abdominal pain | Hoarseness (3.3% vs 8.1%)a |
| Ataxia | Myalgia (11.3% vs 24.4%)* | |
| Conjunctivitis | Rash (4.6% vs 1.6%)a | |
| Coryza | Sore throat (24.5% vs 35%)a | |
| Cough | ||
| Diarrhea | ||
| Fever | ||
| Headache | ||
| Nausea or vomiting | ||
| Seizure | ||
| Silvennoinen et al.63 | Cough | None |
| Fever | ||
| Headache | ||
| Myalgia | ||
| Rhinitis | ||
| Sore throat |
aSymptom approached statistical significance (P < .1).
*P < .05.